#define  _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include<assert.h>
size_t Mystrlen(const char *arr)
{
	assert(arr);
	int count = 0;
	while (*arr)
	{
		*arr++;
		count++;
	}
	return count;
}
int main()
{
	char str[] = "ABCDEFG";
	size_t s = Mystrlen(str);
	printf("%d", s);
	return 0;
}